Improvement ih hot-air furnaces



M. FUNK.

Hot-Air Furnaces;

N0,l5] 017, Paten`tedMay19,l874. f A61 XA- f1 Z: A ifi; j E i 1* 6' l 'W Witnesses: Inventur: www@ TMW Attorneys.

J iirrro.

MICHAEL FUNK, OF LA GROSSE, VISGONSIN.

IMPROVEMENT IN HOTA|R FURNACES.

Specification forming part of Letters Patent No. E5L0ll7, dated May 19, 1874 application filed i January 31, 18,74.

To all whom it may concern:

Be it known that I, MICHAEL' FUNK, of La Grosse, in the county of La Grosse and State of Wisconsin, have invented a new and Improved Heating-Furnace, of which the following is a specification:

In the accompanying drawings, Figure 1 represents a sectional ground plan of my improved heating-furnace, and Fig. 2 a vertical section of the same on the line a' x, Fig. l.

Similar letters of reference indicate corresponding parts.

My invention is an improvement in airheating furnaces in which the heating-chamber proper is inclosed in a case. The improvement relates to features of construction and` arrangement, as hereinafter described, and specifically indicated in the claim.

In the drawing, A represents the furnace; B, the radiator; and C the casing of my hotair heating-furnace. rEhe furnace A is constructed to be used with any kind of fuel, and has transverse air-dues A A riveted to the top part,the ash-pit D being arranged below the grate. The face or front part of the furnace is some distance from the front part of casing C, furnace and ash-pit being connected to the doors of the casing by iianged extensions E, which are riveted to furnace and casing, and make thereby the face-surface of furnace and ash-pit available for heating up the Iair circulating around their front and side parts. The radiator B is constructed in similar mannerof wrought-iron plates with lateral boiler-fines B1, and with a central lateral partition, B2, open at the bottom, by which the current of the nre-gases is deflected so as to pass around the air-fines before leaving by the exit-tube to the chimney, as indicated by arrows in Fig. 2. A good portion of the heat of the gases of combustion is thus utilized in the radiator. A channel or iiue, F, connects the bottom of the radiator to the outside of casing C, for the purpose of admitting the taking out of the soot and other substances collected therein. The connection of furnace A and radiator B is made by means of bolted and cemented tubes G, all parts being constructed air-tight, so that none of the fire-gases can escape into the air-chamber, formed by the casing, and produce an unhealthy adminturc of the air circulating therein. v There in the furnace is regulated from the outside by a damper, a, which closes partially or wholly the connecting-tube Gr, the damper-rod b being suspended in hook-shaped guides d, which are pending from the top of the furnace.

The whole furnace may be made portable or Stationary, casing C being in the former case COnstructed of cast iron or other metal, and in the other case of brick walls of suitable thickness. rlhe radiator is placed either to the rear side or top of the furnace, as found most convenient in the space in which the heater is to be put up. As the parts are all finished, the heating-furnace may be set up in very short time. I

The necessary fresh air enters into the oas ing by a side door, c, near the lower part of the same, and passes outbythe tubes fat the top part to the rooms or other places to be heated.

The air circulates freely through the fines.

and around furnace and radiator, and is supplied with a certain quantity of moisture from f the horizontal water-tank 1I, which extendsl into the airchamber from the front part of the casing, and is relled from time to time from. the outside.

The arrangement of the parts inside of the casin g and their strong and solid construction produces a more complete utilization of the Vheat of the fuel than has been hitherto the ing air-flues A', and the radiator B having flues B', of the connecting-tube G, arranged as specified, and the damper a, operated by rod l), all as shown and described.

MICHAEL FUNK. Witnesses:

Il. E. HUBBARD, J'. C. MILLER. 

